Science : Ch 11 – The Human Eye and the Colourful World

The bluish colour of water in deep sea is due to:

The red colour of the sun at the time of sunrise and sunset is because:

Ankit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed and several observations can be explained on the basis of this phenomenon,name the phenomeoneon

Arpit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed ,What is the total time diference on duration of day on earth?

Why don’t planets twinkle?

Milk is a colloid that contains globules of fat and protein. When a beam of light is directed at a glass of milk the light is scattered. That is a great example

Power of a lens is

Effect produced by scattering of light by the atmosphere.

The sky appears black to an astronaut

The defect the eye cannot focus objects both horizontally and vertically at the same time

When a person can see faraway objects but not nearby objects.

Rainbow is caused due to

The colour of scattered light depends on the

The colour of the clear sky blue due to

The sky appears black to an astronaut as there is no